Aerating attachment for chasm-pumps



(No Model.)

W. MILD.

AERATING ATTACHMENT FOR CHAIN PUMPS. No. 883,476. Patented May 29, 1888.

-mul W I'INESSESI INVEN TOR WILLIAM MILD, OF HAMILTON, OHIO.

AERATING ATTACHMENT FOR CHAlN- -PUMPS.

SPECIFICATION forming part of Letters Patent No. 383,476, dated May 29,1888. Application filed August 8, 1887. Serial No. 246.446. (No model.)

To all whom it may concern.-

Be it known that I, VVILLIAM MILD, of Harm ilton, in the county ofButler and State of Ohio, have invented a new and useful Improvement inAerating Attachments for OhainPumps, which improvement is fully setforth in the following specification and accompanying drawings, in whichFigure 1 is a vertical elevation, partly in section, of a chain-pumpequipped with my aerating attachment; Fig. 2, an enlarged verticalsection of the aerating cup and link; Fig. 3, a view of the detachedportions of the link; and Fig. 4, a perspective view of the cup, partly1n section.

It is well known in the art to which this pertains that if air is forcedinto a body of still water the oxygen imparts life to the water, givingit the same vitality that is secured by running water. Still water iswell known as dead water. To this end pumps have been constructed inwhich cups are placed at intervals on chain or other carrying medium, sothat the downward dip of the cup would carry sufiicient air to thebottom of the mass of the water and, when the cup was inverted, permitthe air to permeate the water and thus purify it. It has also been shownthat the mere stirring or agitation of water is not effectual tovitalize it, unless at the same time it can be exposed to fresh air, andthis is generally an impossibility in cisterns and in many closed wells.The common chain pump provided at intervals with buttons has long been afavorite means of raising water, and its strong stirring motion as therough chain passes through the water is also a favorable feature inusing chain-pumps; but it must be admitted that the button and chain donot have the effect of forcing air into the mass of the water to anyappreciable depth.

My design is to attach to the buttons at intervals cups or smallcylinders of the same diameter as the buttons, and preferably abouttwice as long as the diameter, and these cups are perforated at eachend, or open at one end and perforated at the other, the open end,however, being of such area as to gradually permit the air to escape asit descends into the body of the Water and not too rapidly force thewater through the perforations of the opposite end. Instead of attachingthese cups or cylinders to the buttons, the buttons may be dispensedwith and the cylinders substituted. cheaper and subserves the purposeequally as well.

I will now refer to the annexed drawings in order to more specificallyset forth the manner in which I construct and attach the cups and toexplain the operation of the same.

A represents the Windlass, B the chain, and O the tube, of an ordinarychain-pump. The usual buttons, D, placed at intervals on the chain, areof the common form and attached in any manner to the chain. The cups E,which constitute my attachment, are disposed along this chain atsuitable intervals instead of the buttons 1). Fig. 2 shows these cups invertical section, in which F represents a link or a stem having at oneend an eye or ring, G, and screwthreaded at its opposite end, H, toreceive the ring or eye I, which has a screwthreaded aperture to [it thestem F. The cup or cylinder has a head, J, of the same diameter as thebutton of the chain, and this head is provided with perforations K forair and a central aperture, L, through which the stem F passes. Thelower end of this cylinder-shell is open.

It will be observed by reference to Fig. 3 that a disk, M, is placed onthe stem F in the open end of the shell E. The disk ispreferably smallerthan the inner diameter of the shell, and the size of this may beregulated by having disks of different sizes prepared and placed thereinwhen required. The object of this disk is to graduate the inflow of thewater to the cylinder as it descends on the chain, or prevent the toorapid escape of air.

I have herein shown no particular means for fastening the head J to thelink or ring G or the stem F; but it is obvious that to do this wouldnot require any invention. It may be either soldered to the head J, orthe head J and ring G may be cast together; orathimble or tube may beinterposed between the disk M and head J.

In operation the cups are placed on the chain so that they will beinverted while in motion in the tube 0 of the pump, and the open end ofthe cup is therefore on top as the chain descends into the cistern. Inits upward progress through the water-tube G the The latter means Iprefer, as it is much u cup, after passing the discharge-spout N, isimmediately filled with air, the water having been discharged therefrom,the aperture between the disk M and the open mouth of the cylinderreadily permitting this to be done. The air therefore received withinthe cup is the fresh air taken above the surface of the ground, or abovethe curb of the cistern. As it is plunged into the water filled withpure air, the water gradually forces out the air, so that by the timethe lower end of the chain reaches the upward curve the cup is entirelyfilled with water and exhausted of its air.

I would call particular attention to the fact that the ordinarychain-pump is operated With greater rapidity than the well-knownwaterpurifying pumps, because in the latter the water is actuallycarried up to the dischargespout in the cups themselves; hence themotion must be comparatively slow, so as to prevent an overdischarge ofwater; but in chainpumps the water is forced up by being confined in thetube, in which is an upward movement of a succession of buttons, so thatspeed is a necessary requirement.

It is not pretended or claimed that the cups in this invention aid inraising the air, except in so far as the natural conformity or elongatedshape of the cup might lend in this direction; but the principal objectis to utilize the ordlnary chain-pump by attaching thereto devices whichwill force the air into the water in the same manner as is done by thepn rifying-pumps.

Therefore what I claim as new is- 1. An aerating-cup composed of acylinder open at one end and having a perforatedhead at its other end,in combination with the stem having a link or eye at each end, and thedisk for partially closing the cup, substantially as herein set forth.

2. The combination of the cup E, having the perforated head, and thecentral stem, F, having fixed at one end the eye G and upon its otherscrew-threaded end the disk M, of smaller diameter than the cup, and eyeI,with the chain, substantially as described.

In testimony that, I claim the foregoing I have hereunto set my hand,this 12th day of July,'1887, in the presence of two witnesses.

WILLIAM WILD.

Witnesses:

EDWARD E. HULL, WM. 0. CAMPBELL.

